Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Sales	$ 6,707.3	$ 6,407.5
Net earnings from continuing operations	$ 834.6	$ 707.6
Diluted net earnings per share (in dollars per share)	$ 2.38	$ 2.01